docs: def render_child(self, child, view_name=None, context=None):
          """A shortcut to render a child block.
  
          Use this method to render your children from your own view function.
  
          If `view_name` is not provided, it will default to the view name you're
          being rendered with.
  
          Returns the same value as :func:`render`.
  
          """
          return child.render(view_name or self._view_name, context)